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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한기계학회 Journal of Mechanical Science and Technology Journal of Mechanical Science and Technology Vol.20 No.5
- 발행연도
- 2006.5
- 수록면
- 675 - 680 (6page)
이용수
초록· 키워드
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This is a study of fatigue strength of weld deposits with transverse cracks in plate up to 50 ㎜ thick. It is concerned with the fatigue properties of welds already with transverse cracks. A previous study of transverse crack occurrence, location and microstructure in accordance with welding conditions was published in the Welding Journal (Lee et aI., 1998). A fatigue crack develops as a result of stress concentration and extends with each load cycle until fatigue occurs, or until the cyclic loads are transferred to redundant members. The fatigue performance of a member is more dependent on the localized state of stress than the static strength of the base metal or the weld metal. Fatigue specimens were machined to have transverse cracks located on the surface and inside the specimen. Evaluation of fatigue strength depending on location of transverse cracks was then performed. When transverse cracks were propagated in a quarter- or half-circle shape, the specimen broke at low cycle in the presence of a surface crack. However, when the crack was inside the specimen, it propagated in a circular or elliptical shape and the specimen showed high fatigue strength, enough to reach the fatigue limit within tolerance of design stresses.
목차
Abstract
1. Introduction
2. Experimental Procedure
3. Result and Discussion
4. Conclusions
References
참고문헌 (10)
참고문헌 신청
Boiler and Pressure Vessel Code, Section XI, 1995, American Society of Mechanical Engineers, pp.20~23.
Dreng, T., Robakowshi and Dreng, and Scierski, J. M., 1987, International Conference on Fatigue of Welded Constructions, England, Welding Institute, pp.445~456.
Forman, R. G., 1972, "Study of Fatigue Crack Initiation from Flaws Using Fracture Mechanics Theory," Eng. Fract. Mech., Vol.4, pp.333~345.
Lee, H. W. and Kang, S. W., 1997, "A Study on Transverse weld Cracks in 50- mm Thick Steel Plate with the SAW Process," Journal of Japan Welding Society, Vol.15, No.4, pp.563~573.
Lee, H. W., Kang, S. W. and Urn, D. S., 1998, "A Study on Transverse weld cRacks in Thick Steel Plate with the FCAW Process," Welding Journal, Vol.77, No.12, pp.503~510.
Dreng, T., Robakowshi and Dreng, and Scierski, J. M., 1987, International Conference on Fatigue of Welded Constructions, England, Welding Institute, pp.445~456.
Forman, R. G., 1972, "Study of Fatigue Crack Initiation from Flaws Using Fracture Mechanics Theory," Eng. Fract. Mech., Vol.4, pp.333~345.
Lee, H. W. and Kang, S. W., 1997, "A Study on Transverse weld Cracks in 50- mm Thick Steel Plate with the SAW Process," Journal of Japan Welding Society, Vol.15, No.4, pp.563~573.
Lee, H. W., Kang, S. W. and Urn, D. S., 1998, "A Study on Transverse weld cRacks in Thick Steel Plate with the FCAW Process," Welding Journal, Vol.77, No.12, pp.503~510.
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